ThermoTec 29kw Service manual

THERMOTEC
INVERTER SWIMMING
POOL HEAT PUMP
Installation& Instruction Manual
for Vertical Models
29kw and 34kw
Version 1.0

2
Table of contents
1. Preface 3
2. Specifications
2.1 Performance Data 4
2.2 Dimensions 6
3. Installation and Connection
3.1 Heat Pump Location 8
3.2 How Close to Your Pool? 8
3.3 Installation illustration 9
3.4 Installation of a check valve 9
3.5 Electrical Wiring 10
3.6 Initial Start-up of the Unit 10
3.7 Condensation 11
4. Operation and Use
4.1 Display interface introduction
12
4.2 Button functions
13
4.3 Error codes
17
4.4 Error code list
18
5. Wiring diagrams
5.1 Wire control interface diagram and definition
20
5.2 Controller interface diagram and definition
20
6. Maintenance and Inspection
6.1
23
6.1 Wi-Fi Module
23
7.Appendix
7.1 Caution & Warning 24
7.2 Warranty 25

3
1. Preface
In order to provide our customers with quality, reliability and versatility, this product has
been made to strict production standards. This manual includes all the necessary
information about installation, debugging, discharging and maintenance. Please read this
manual carefully before you open or maintain the unit. The manufacture of this product will
not be held responsible if someone is injured or the unit is damaged, as a result of
improper installation, debugging, or unnecessary maintenance. It is vital that the
instructions within this manual are adhered to at all times. The unit must be installed by
qualified personnel.
The unit can only be repaired by qualified personnel or an authorized dealer.
Maintenance and operation must be carried out according to the recommended time and
frequency, as stated in this manual.
Use genuine standard spare parts only.
Failure to comply with these recommendations will invalidate the warranty.
Swimming Pool Heat Pump Unit heats the swimming pool water and keeps the temperature
constant.
Our heat pump has following characteristics:
•Durable
The heat exchanger is made of PVC & Titanium tube which can withstand prolonged
exposure to swimming pool water.
•Installation flexibility
The unit can be installed outdoors or indoors.
•Quiet operation
The unit comprises an efficient rotary/ scroll compressor and a low-noise fan motor,
which guarantees its quiet operation.
•Advanced controlling
The unit includes micro-computer controlling, allowing all operation parameters to be
set. Operation status can be displayed on the LCD wire controller. Remote controller
can be chosen as future option.

4
2. Specifications
2.1 Performance data
UNIT
Thermotec Inverter 29
Thermotec Inverter 34
Max Pool volume*
m
3
116
136
Advised Max Pool volume **
m
3
93
109
Operating air temperature
°C
-15 to 43
Air 27°C / Water 26°C / Humidity 80%
Heating Capacity
kW
6.7 – 28.6
8.0 –34.0
Btu
22780 –97240
27200 –115600
Consumed power
kW
0.53 –5.4
0.64 –6.6
COP
5.3 –12.64
5.15 –12.5
Air 15°C / Water 26°C / Humidity 70%
Heating Capacity
kW
5.5 –23.4
6.6 –27.8
Btu
18700 –79560
22440 –94520
Consumed power
kW
0.82 –5.4
0.99 –6.5
COP
4.33 –6.71
4.28 –6.67
Air 10°C / Water 26°C / Humidity 64%
Heating Capacity
kW
4.9 –20.9
5.9 –24.8
Btu
16660 –71060
20060 –84320
Consumed power
kW
0.86 –5.05
1.05 –6.1
COP
4.14 –5.7
4.07 –5.62
Power supply
230V / 50Hz
Nominal Heating Capacity
kW
11.8
15.1
Nominal power input
kW
2.4
3.1
Max power input
kW
28.6
33.7
Nominal Running current
A
10.7
13.5
Current range
A
2.5 to 30
3.1 to 30.6
Max Current
A
30
30.6
Compressor quantity
1
1
Compressor type
Rotary
Rotary
Refrigerant
R410A
Fan quantity
1
1
Fan power input
W
200
200
Fan rotary speed
RPM
600 - 800
500-800
Fan direction
Vertical
Vertical
Noise at 1m
dB(A)
49 - 60
50 - 61
Noise at 10m
dB(A)
33 - 43
35 - 45
Water connection
mm
50
50
Nominal water flow
m
3
/h
9.5
11.5
Water pressure drop (max)
kPa
16
20
Unit net dimensions (L*W*H)
mm
920 x 960 x 1025
920 x 960 x 1025
Unit shipping dimensions (L*W*H)
mm
970x1010x1075
970x1010x1075
Net weight
kg
113
118
Shipping weight
kg
148
156
* Max pool volume for an entirely insulated pool, with cover, free from wind and exposed to the sun
In case the pool volume is close to the maximum value, the inverter heat pump will nearly always run at full power
** Advised pool volume for efficient heating

5
2.2 Dimensions
Thermotec Inverter Vertical 29kw and 34kw
Thermotec Inverter 17 / 19.5
2.3 Removing the Case

6
2.4 Connecting the Power Cable
To connect the powe cable, please remove the front panel of the heat pump and
connect the power cable to the terminal block on the fron of the heat pump

7
3. Installation and Connection
3.1 Heat Pump Location
The unit will perform well in any outdoor location provided that the following three factors are
presented:
1. FreshAir - 2. Electricity - 3. Pool filter piping
The unit may be installed virtually anywhere outdoors. For indoor pools please consult the
supplier. Unlike a gas heater, it has no draft or pilot light problem in a windy area.
DO NOT place the unit in an enclosed area with a limited air volume, where the units
discharge air will be re-circulated.
DO NOT place the unit to shrubs which can block air inlet. These locations deny the unit of a
continuous source of fresh air which reduces its efficiency and may prevent adequate heat
delivery.
3.2 How Close To Your Pool?
Normally, the pool heat pump is installed within 7.5 meters of the pool. The longer the distance
from the pool, the greater the heat loss from the piping. For the most part, the piping is buried.
Therefore, the heat loss is minimal for runs of up to15 meters(15 meters to and from the pump =
30 meters total), unless the ground is wet or the water table is high. A very rough estimate of heat
loss per 30 meters is 0.6 kW-hour,(2000BTU) for every 5°C difference in temperature between the
pool water and the ground surrounding the pipe, which translates to about 3% to 5% increase in
run time.

8
3.3 Installation illustration
Remarks:
The factory only provides the heat pump. Other parts, including a contingent by-pass are to be
provided by the user or installer.
Attention:
Please take the following steps when installing the heat pump:
1. Each addition of chemicals has to be performed through the conduits locatedAFTER the heat pump.
2. Install a by-pass for easy maintenance
3. Always place the heat pump on a solid base and use the supplied silent blocks in order to avoid
vibrations and noise.
4. Always keep the heat pump in upright position. If the unit has been tilted, you should wait for at least
24 hours before turning it on.
3.4 Installation of a check valve
When using automatic chlorine and pH dosage systems, it is of uttermost importance to protect
the heat pump from high concentrations of these chemicals that could corrode the heat exchanger
Therefore, such systems should add the chemicals in the conduits located DOWNSTREAM of the
heat pump and it is recommended to install a check-valve in order to prevent backflow when there
is no water circulation.
Damage to the heat pump caused by disregarding any of these recommendations will invalidate
the warranty.

9
3.5 Electrical Wiring
Important - Although the heat pump is electrically isolated from the rest of the unit, this
only prevents the passage of electricity to or from the pool water. Grounding the unit is still
required to protect yourself from short circuits inside the unit. Make for adequate ground
connection.
Check if the electrical mains voltage corresponds with the operating voltage of the heat pump
prior to hooking up the unit.
It is recommended to use a separate fuse (C-curve) as well as adequate wiring (see table below).
Connect the electrical wires with the terminal block labelled ‘TO POWER SUPPLY’.
Next to this connection, there is a second terminal block labelled ‘TO PUMP’, to which the filter
pump (max. 5A/240V) or an electrical relay for a filtration pump can be connected. This
connection makes it possible to control filter pump operation with the heat pump.
Model
Voltage (V)
Fuse (C-curve)
Max current (A)
Cable section*
Thermotec Inverter 29
220-240V
30
30
10 mm2
Thermotec Inverter 34
220-240V
30
30.6
10 mm2
* For a maximum cable length of 50m
3.6 Initial startup of the Unit
NOTE- In order for the unit to heat the pool or spa, the filter pump must be running to
circulate water through the heat exchanger.
Start up Procedure - After installation is completed, you should follow these steps:
1. Turn on your filter pump. Check for water leaks and verify flow to and from the pool.
2. Turn on the electrical power supply to the heat pump, then press the key ON/OFF of wire
controller, It should start in several seconds.
3. After running a few minutes make sure the air leaving the fan opening of the unit is cooler
(between 5-10°C)
4. With the unit operating turn the filter pump off. The unit should also turn off automatically,
5. Allow the unit and pool pump to run 24 hours per day until desired pool water temperature is
reached. When the desired pool water temperature reaches the setting, the unit just shuts off.
The unit will now automatically restart (as long as your filter pump is running) when the pool
temperature drops more than 2°C below set temperature.
Time Delay- The unit is equipped with a 3-minute built-in solid state restart delay included to
protect control circuit components and to eliminate restart cycling and contactor chatter.
This time delay will automatically restart the unit approximately 3 minutes after each control
circuit interruption. Even a brief power interruption will activate the solid state 3 minute
restart delay and prevent the unit from starting until the 5 minute countdown is completed.
Power interruptions during the delay period will have no effect on the 3 minute countdown.

10
3.7 Condensation
Since the Heat pump cools down the air about 5°C, water may condense on the fins of the evap-
orator. If the relative humidity is very high, this could be as much as several litres an hour. The
water will run down the fins into the base pan and drain out through the barbed plastic condensa-
tion drain fitting on the side of the base pan.
This fitting is designed to accept 20mm clear vinyl tubing which can be pushed on by hand
and run to a suitable drain. It is easy to mistake the condensation for a water leak inside the
unit.
TIP:
A quick way to verify that the water is condensation is to shut off the unit and keep the
pool pump running. If the water stops running out of the base pan, it is condensation. AN
EVEN QUICKER WAY IS TO TEST THE DRAIN WATER FOR CHLORINE - if there is no chlorine
present, then it’s condensation.

11
4. Operation and Use
4.1 Display interface introduction
1. Main interface
8
9
1 2 3 4 5 6 7
2. Button description
NO.
Name
button function
1
ON/OFF
Start/Stop the unit
2
Lock screen
Locks the screen
3
Parameters
Access to parameters
4
Clock settings
- Set the date & time
- Activate timers
5
Error codes
View error code history
6
Silent settings
- Press to activate silent function
- Set timing Low speed function
7
Mode
Mode switch interface
8
Statistics
View temperature and power curve
9
Water temperature
Mode settings and target temp setting interface

12
4.2 Button functions
1. ON/OFF
With the ON/OFF button, the heat pump is turned ON or OFF (stand-by status)
2. LOCK SCREEN
Press this button to lock the screen
To unlock: press the lock button and enter the code “22”
3. PARAMETERS
N/A
4. CLOCK SETTINGS
In the main interface, tap on the clock Settings button 3, interface displays as follows:
Setting the time
tap on the Time Settings button (1), then the following menu pops up:
Tap the value to set time directly, the tap the Enter button to save the Settings.
For example: setup time: the 02-25-2016 15:00:00, input 15 00 00 02 25 16
Note:
if the input format is not correct, the setting can not be saved by tapping Enter.

13
Setting/activating the Timers
Tap the TIMER set button (2), to enter the timer menu
NO
Name
Button color
Button function
1
TIMER START
Activated: Green
Not activated: Grey
Tap this button to activate/deactivate
the START timer
2
Start time
Set Start time
3
TIMER END
Activated: Red
Not activated: Grey
Tap this button to activate/deactivate
the END timer
4
End time
Set End time
For example above: without action, 00:00 o ‘clock and 01:00 o ‘clock
will be the on and off time of timing settings.
5. ERROR CODES
See section 4.3
6. SILENT SETTINGS
In the main screen, tap the silent settings button
A pop-up appears with 2 icons:

14
Direct silent mode
Tap the Direct silent button (1), the unit will enter silent mode directly.
The displays shows a fan icon with 3 blades to indicate that the silent mode is active
Tap the silent button again, to exit the silent mode.
Timed silent mode
Tap the Timed silent button (2)
The displays shows a menu with timer settings to activate/deactivate the silent mode
NO
Name
Button colour
Button function
1
Timer SILENT OFF
Activated: Red
Not activated: Grey
Tap to activate/deactivate the
END timer
2
Timer SILENT ON
Activated: Green
Not activated: Grey
Tap to activate/deactivate the
START timer
3
Start time
Set start time
4
End time
Set end time
For example above, Tap “ON” to use the Timed silent mode
the unit will start the silent mode at 23:00h and end at 08:00h
Note: If the unit is running in silent mode, and the OFF button (1) is tapped, then the
unit will exit silent mode immediately

15
7. MODE
In the main screen, tap the Mode button.
A new menu will pop up:
1) Cooling mode
2) Automatic heating/cooling mode
3) Heating mode
4) Set desired swimming pool temperature
8. STATISTICS
In the main screen, tap the Statistics button.
A new menu will pop up.
The temperature curve automatically updates every hour, and the curve record can be
stored for 60 days
9. WATER TEMPERATURE
Set the desired swimming pool water temperature

16
4.3 Error codes
In the main screen, tap the Error codes button.
A new menu will pop up:
If there are no error codes present, the main display will show a grey triangle logo:
When an error occurs, the error icon will flash orange/grey:
the system will record the time, code and name of the error.
When an error occurs, and you don’t check the Error code history menu, the main interface will
display a static “ “ icon after a while.
If you do check Error code history menu, the main interface will display a static “ “ icon.
The Error code history menu shows all the error codes in reverse order, with the most recent code
on top. If you tap the “Clean” key, you can erase all the codes.
Wi-Fi Module

17
4.4 Error code list
Protect/fault
Fault
display
Reason
Elimination methods
Standby
non
Normal boot
non
Inlet temp. Sensor failure
P01
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
Outlet temp. Sensor failure
P02
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
Coil temp. Sensor failure
P04
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
Ambient temp. sensor failure
P05
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
Suction temp. sensor failure
P07
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
Exhaust temp. sensor failure
P081
The temp. Sensor is broken
or short circuit
Check or change the
temp. Sensor
High pressure protection
E01
The high-pressure switch is
broken
Check the pressure
switch and cold circuit
Low pressure protection
E02
Low pressure1 protection
Check the pressure
switch and cold circuit
Flow failures
E03
No water/little water in
water system
Check the pipe water
flow and water pump
System anti freezing
protection
E07
Water flow is not enough
Check the pipe water flow and whether
the water system is jammed or not
The primary anti-freezing
protection
E19
The ambient temp. Is low
The secondary
anti-freezing Protection
E29
The ambient temp. Is low
Water-inlet and outlet temp
E06
Water flow is not enough
and low differential pressure
Check the pipe water flow and whether
the water system is jammed or not
Low temperature protection
non
The environment temp. is low
Compressor too much
electricity protection
E051
The compressor is overload
Check whether the system of
the compressor is running normally
Exhaust Temp. Of system
is too high
P082
The compressor is overload
Check whether the system of
the compressor is running normally
Communication failure
E08
Communication failure between
wire controller and main board
Check the wire connection between
remote wire controller and main board
Antifreeze Temp. Sensor
Fault
P09
antifreeze temp sensor is broken or
short circuited
check and replace this temp
sensor
EC fan feedback Fault
F051
There is something wrong with
fan motor and fan motor stops
running
Check whether fan motor is
broken or locked or not
Pressure sensor Fault
PP
The pressure Sensor is broken
Check or change the pressure
Sensor or pressure

18
Protection/fault
Fault
display
Reason
Elimination methods
MOP drive alarm
F01
MOP drive alarm
Recovery after the 150s
Frequency conversion board
offline
F02
Frequency conversion board and main
board communication failure
Check the
communication connection
IPM modular protection
F03
IPM modular protection
Recovery after the 150s
Compressor start-up failure
F04
Lack of phase, step or drive hardware
damage
Check the measuring voltage check
frequency conversion board hardware
Dc fan fault
F05
Motor current feedback open circuit or
short circuit
Check whether current return wires
connected motor,
IPM Input current is large
protection
F06
IPM Input current is large
Check and adjust the current
measurement
Dc voltage is large
F07
DC bus voltage>Dc bus over-voltage
protection value
Check the input voltage measurement
Dc voltage is not enough
F08
DC bus voltage<Dc bus over-voltage
protection value
Check the input voltage measurement
Input voltage is not enough
F09
The input voltage is low, causing the
input current is high
Check the input voltage measurement
Input voltage is large
F10
The input voltage is too high, more than
outage protection current RMS
Check the input voltage measurement
Voltage sampling fault
F11
The input voltage sampling fault
Check and adjust the current
measurement
DSP and PFC connect fault
F12
DSP and PFC connect fault
Check the communication connection
DSO and SPPB connect fault
F13
DSO and SPPB connect fault
Check the communication connection
DSP and MCU connect fault
F14
DSP and MCU connect fault
Check the communication connection
IPM overheating protection
F15
The IPM module is overheat
Check and adjust the current
measurement
Weak magnetic field
protection
F16
Compressor magnetic force is not
enough
The input voltage lost phase
F17
The input voltage lost phase
Check and measure the voltage
adjustment
IPM sampling electricity
F18
IPM sampling electricity is fault
Check and adjust the current
measurement
Radiator temperature sensor
fault
F19
Sensor is short circuit or open
circuit
Inspect and replace the sensor
Transducer overheating
protection
F20
The transducer is overheat
Check and adjust the current
measurement
Transducer overheating
alarm
F22
Transducer temperature is too
high
Check and adjust the current
measurement
Compressor electricity large
protection
F23
Compressor electricity is large
The compressor over-current
protection
Input current too large alarm
F24
Input current is too large
Check and adjust the current
measurement
EEPROM error alarm
F25
MCU error
Check whether the chip is damaged
Replace the chip

19
Terminal
Function
V
12V power +
R
Not used
T
Not used
A
485A
B
485B
G
GND (power -)
5. Wiring diagrams
5.1 Wire control interface diagram and definition
V
R
T
A
B
G
Thermotec Inverter 29kw

20
Thermotec Inverter 34kw